From 5c839f7cdf0ad171bdfe19dfba1de7ac7b783883 Mon Sep 17 00:00:00 2001
From: XuGuohui <guohui@redbear.cc>
Date: Tue, 26 Jul 2016 01:57:24 +0800
Subject: [PATCH] Fixes the undefined reference issue at link stage

---
 targets/duo/jshardware.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/targets/duo/jshardware.c b/targets/duo/jshardware.c
index d7a6641552..84bf4b9844 100644
--- a/targets/duo/jshardware.c
+++ b/targets/duo/jshardware.c
@@ -654,3 +654,6 @@ JshPinState jshPinGetState(Pin pin) {
 void jshEnableWatchDog(JsVarFloat timeout) {
   return;
 }
+
+void jshKickWatchDog() {
+}